#include <iostream>

using namespace std;

int main(void)
{
    //转义字符

    //换行符 \n
    cout << "Hello, world!\n";

    //反斜杠 \\

    cout << "\\\n";

    //水平制表符 \t (使占8个位置)
    cout << "aaa\tHello, world!\n";
    cout << "aaaaa\tHello, world!\n";
    cout << "aa\tHello, world!\n";

    return 0;
}